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Oliver Stannard [Tue, 21 Oct 2014 11:49:14 +0000 (11:49 +0000)]
[ARM] NEON 32-bit scalar moves are also available in VFPv2
The 32-bit variants of the NEON scalar<->GPR move instructions are
also available in VFPv2. The 8- and 16-bit variants do require NEON.
Note that the checks in the test file are all -DAG because they are
checking a mixture of stdout and stderr, and the ordering is not
guaranteed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220288
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Yuri Gorshenin [Tue, 21 Oct 2014 10:22:27 +0000 (10:22 +0000)]
[asan-asm-instrumentation] Fixed memory accesses with rbp as a base or an index register.
Summary: Fixed memory accesses with rbp as a base or an index register.
Reviewers: eugenis
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D5819
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220283
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Oliver Stannard [Tue, 21 Oct 2014 09:14:15 +0000 (09:14 +0000)]
[Thumb2] LDRS?[BH] cannot load to the PC
The Thumb2 LDRS?[BH] instructions are not valid when the destination
register is the PC (these encodings are used for preload hints).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220278
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Chandler Carruth [Tue, 21 Oct 2014 09:00:40 +0000 (09:00 +0000)]
Teach the load analysis to allow finding available values which require
inttoptr or ptrtoint cast provided there is datalayout available.
Eventually, the datalayout can just be required but in practice it will
always be there today.
To go with the ability to expose available values requiring a ptrtoint
or inttoptr cast, helpers are added to perform one of these three casts.
These smarts are necessary to finish canonicalizing loads and stores to
the operational type requirements without regressing fundamental
combines.
I've added some test cases. These should actually improve as the load
combining and store combining improves, but they may fundamentally be
highlighting some missing combines for select in addition to exercising
the specific added logic to load analysis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220277
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Zoran Jovanovic [Tue, 21 Oct 2014 08:44:58 +0000 (08:44 +0000)]
[mips][microMIPS] Implement ADDU16 and SUBU16 instructions
Differential Revision: http://reviews.llvm.org/D5118
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220276
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Zoran Jovanovic [Tue, 21 Oct 2014 08:32:40 +0000 (08:32 +0000)]
[mips][microMIPS] Implement AND16, NOT16, OR16 and XOR16 instructions
Differential Revision: http://reviews.llvm.org/D5117
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220275
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Zoran Jovanovic [Tue, 21 Oct 2014 08:23:11 +0000 (08:23 +0000)]
[mips][microMIPS] Implement microMIPS 16-bit instructions registers
Differential Revision: http://reviews.llvm.org/D5116
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220273
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Rafael Espindola [Tue, 21 Oct 2014 01:17:30 +0000 (01:17 +0000)]
Fix a bit of confusion about .set and produce more readable assembly.
Every target we support has support for assembly that looks like
a = b - c
.long a
What is special about MachO is that the above combination suppresses the
production of a relocation.
With this change we avoid producing the intermediary labels when they don't
add any value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220256
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Paul Robinson [Tue, 21 Oct 2014 01:00:55 +0000 (01:00 +0000)]
Do not attribute static allocas to the call site's DebugLoc.
When functions are inlined, instructions without debug information are
attributed to the call site's DebugLoc. After inlining, inlined static
allocas are moved to the caller's entry block, adjacent to the caller's
original static alloca instructions. By retaining the call site's
DebugLoc, these instructions could cause instructions that were
subsequently inserted at the entry block to pick up the same DebugLoc.
Patch by Wolfgang Pieb!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220255
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Rafael Espindola [Tue, 21 Oct 2014 00:47:49 +0000 (00:47 +0000)]
Make this test a bit more strict.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220253
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Chandler Carruth [Tue, 21 Oct 2014 00:36:28 +0000 (00:36 +0000)]
Teach lit to filter the host LDFLAGS down from the build system and into
the CGO build environment. This lets things like -rpath propagate down
to the C++ code that is built along side the Go bindings when testing
them.
Patch by Peter Collingbourne, and verified that it works by me.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220252
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David Blaikie [Tue, 21 Oct 2014 00:34:39 +0000 (00:34 +0000)]
PR21202: Memory leak in Windows RWMutexImpl when using SRWLOCK
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220251
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Rafael Espindola [Tue, 21 Oct 2014 00:25:49 +0000 (00:25 +0000)]
Make AsmPrinter::EmitLabelOffsetDifference a static helper and simplify.
It had exactly one caller in a position where we know hasSetDirective is true.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220250
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Lang Hames [Tue, 21 Oct 2014 00:24:02 +0000 (00:24 +0000)]
[MCJIT] Temporarily revert r220245 - it broke several bots.
(See e.g. http://bb.pgr.jp/builders/cmake-llvm-x86_64-linux/builds/17653)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220249
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Philip Reames [Tue, 21 Oct 2014 00:13:20 +0000 (00:13 +0000)]
Introduce enum values for previously defined metadata types. (NFC)
Our metadata scheme lazily assigns IDs to string metadata, but we have a mechanism to preassign them as well. Using a preassigned ID is helpful since we get compile time type checking, and avoid some (minimal) string construction and comparison. This change adds enum value for three existing metadata types:
+ MD_nontemporal = 9, // "nontemporal"
+ MD_mem_parallel_loop_access = 10, // "llvm.mem.parallel_loop_access"
+ MD_nonnull = 11 // "nonnull"
I went through an updated various uses as well. I made no attempt to get all uses; I focused on the ones which were easily grepable and easily to translate. For example, there were several items in LoopInfo.cpp I chose not to update.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220248
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Philip Reames [Mon, 20 Oct 2014 23:52:07 +0000 (23:52 +0000)]
Extend the verifier to validate range metadata on calls and invokes.
Range metadata applies to loads, call, and invokes. We were validating that metadata applied to loads was correct according to the LangRef, but we were not validating metadata applied to calls or invokes. This change extracts the checking functionality to a common location, reuses it for all valid locations, and adds a simple test to ensure a misused range on a call gets reported.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220246
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Lang Hames [Mon, 20 Oct 2014 23:39:54 +0000 (23:39 +0000)]
[MCJIT] Make MCJIT honor symbol visibility settings when populating the global
symbol table.
Patch by Anthony Pesch. Thanks Anthony!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220245
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Quentin Colombet [Mon, 20 Oct 2014 23:13:30 +0000 (23:13 +0000)]
[X86] Fix a bug in the lowering of the mask of VSELECT.
X86 code to lower VSELECT messed a bit with the bits set in the mask of VSELECT
when it knows it can be lowered into BLEND. Indeed, only the high bits need to be
set for those and it optimizes those accordingly.
However, when the mask is a compile time constant, the lowering will be handled
by the generic optimizer and those modifications will generate bad code in the
generic optimizer.
This patch fixes that by preventing the optimization if the VSELECT will be
handled by the generic optimizer.
<rdar://problem/
18675020>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220242
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Philip Reames [Mon, 20 Oct 2014 22:40:55 +0000 (22:40 +0000)]
Introduce a 'nonnull' metadata on Load instructions.
The newly introduced 'nonnull' metadata is analogous to existing 'nonnull' attributes, but applies to load instructions rather than call arguments or returns. Long term, it would be nice to combine these into a single construct. The value of the load is allowed to vary between successive loads, but null is not a valid value to be loaded by any load marked nonnull.
Reviewed by: Hal Finkel
Differential Revision: http://reviews.llvm.org/D5220
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220240
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Simon Pilgrim [Mon, 20 Oct 2014 22:14:22 +0000 (22:14 +0000)]
[X86] Memory folding for commutative instructions (updated)
This patch improves support for commutative instructions in the x86 memory folding implementation by attempting to fold a commuted version of the instruction if the original folding fails - if that folding fails as well the instruction is 're-commuted' back to its original order before returning.
Updated version of r219584 (reverted in r219595) - the commutation attempt now explicitly ensures that neither of the commuted source operands are tied to the destination operand / register, which was the source of all the regressions that occurred with the original patch attempt.
Added additional regression test case provided by Joerg Sonnenberger.
Differential Revision: http://reviews.llvm.org/D5818
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220239
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Rafael Espindola [Mon, 20 Oct 2014 21:37:38 +0000 (21:37 +0000)]
Explain why we don't always use --gc-sections.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220237
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Tim Northover [Mon, 20 Oct 2014 21:28:41 +0000 (21:28 +0000)]
ARM: rework Thumb1 frame index rewriting
The previous code had a few problems, motivating the choices here.
1. It could create instructions clobbering CPSR, but the incoming MachineInstr
didn't reflect this. A potential source of corruption. This is why the patch
has a new PseudoInst for before lowering.
2. Similarly, there was some code to handle the incoming instruction not being
ARMCC::AL, but this would have caused massive problems if it was actually
invoked when a complex offset needing more than one instruction was requested.
3. It wasn't designed to handle unaligned pointers (or offsets). These should
probably be minimised anyway, but the code needs to deal with them properly
regardless.
4. It had some rather dubious ad-hoc code to avoid calling
emitThumbRegPlusImmediate, a function which should be designed to do precisely
this job.
We seem to cover the common cases correctly now, and hopefully can enhance
emitThumbRegPlusImmediate to handle any extra optimisations we need to add in
future.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220236
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Alexey Samsonov [Mon, 20 Oct 2014 20:41:21 +0000 (20:41 +0000)]
Try to fix GCC error about invalid use of const_cast in const version of ErrorOr::get()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220233
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Alexey Samsonov [Mon, 20 Oct 2014 20:33:20 +0000 (20:33 +0000)]
Constify getELFDynamicSymbolIterators standalone function. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220232
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Alexey Samsonov [Mon, 20 Oct 2014 20:32:47 +0000 (20:32 +0000)]
Add const version of OwningBinary::getBinary
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220231
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Alexey Samsonov [Mon, 20 Oct 2014 20:30:57 +0000 (20:30 +0000)]
Be more specific about return type of MachOUniversalBinary::getObjectForArch
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220230
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Alexey Samsonov [Mon, 20 Oct 2014 20:28:51 +0000 (20:28 +0000)]
Constify input argument of RelocVisitor and DWARFContext constructors. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220228
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Dan Liew [Mon, 20 Oct 2014 20:14:28 +0000 (20:14 +0000)]
Teach Lit to catch OSError exceptions when creating a process during the
execution of a shell command. This can happen for example if the
``RUN:`` line calls a python script which can work correctly under
Linux/OSX but will not work under Windows. A more useful error message
is now shown rather than an unhelpful backtrace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220227
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Robert Khasanov [Mon, 20 Oct 2014 19:25:05 +0000 (19:25 +0000)]
Moved out IIT_V64 from common values section.
Thanks Juergen Ributzka for notice.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220224
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Gerolf Hoflehner [Mon, 20 Oct 2014 16:08:33 +0000 (16:08 +0000)]
[AArch64] test case for compfail fixed by r219748
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220206
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Steven Wu [Mon, 20 Oct 2014 15:47:24 +0000 (15:47 +0000)]
Fix Intrinsic::getType not working with vararg
VarArg Intrinsic functions are encoded with "void" type as the last
argument. Now Intrinsic::getType can correctly return all the intrinsic
function type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220205
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Oliver Stannard [Mon, 20 Oct 2014 15:37:35 +0000 (15:37 +0000)]
[Thumb2] RFE, SRS and "SUBS pc, lr" are undefined on v7M
These instructions are related to the v7[AR] exception model, and are
not defined on v7M.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220204
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Sid Manning [Mon, 20 Oct 2014 13:08:19 +0000 (13:08 +0000)]
Remove unnecessary else.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220200
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NAKAMURA Takumi [Mon, 20 Oct 2014 12:12:21 +0000 (12:12 +0000)]
Revert r220174, "Always use -Wl,-gc-sections on our build."
It dropped required functions for plugins with gnu ld 2.20 and 2.21.
Failing Tests (1):
LLVM :: Feature/load_module.ll
Hello: bin/opt: symbol lookup error: lib/LLVMHello.so: undefined symbol: _ZN4llvm11raw_ostream13write_escapedENS_9StringRefEb
Failing Tests (1):
Clang :: Frontend/plugins.c
error: unable to load plugin 'lib/PrintFunctionNames.so': 'lib/PrintFunctionNames.so: undefined symbol: _ZN5clang15PluginASTAction6anchorEv'
I think we should inspect linker's version or behavior to introduce --gc-sections for --export-dynamic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220198
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Oliver Stannard [Mon, 20 Oct 2014 11:30:35 +0000 (11:30 +0000)]
[ARM] Do not select SMULW[BT] or SMLAW[BT]
The current instruction selection patterns for SMULW[BT] and SMLAW[BT]
are incorrect. These instructions multiply a 32-bit and a 16-bit value
(both signed) and return the top 32 bits of the 48-bit result. This
preserves the 16 bits of overflow, whereas the patterns they currently
match truncate the result to 16 bits then sign extend.
To select these instructions, we would need to match an ISD::SMUL_LOHI,
a sign extend, two shifts and an or. There is no way to match SMUL_LOHI
in an instruction pattern as it defines multiple values, so this would
have to be done in C++. I have raised
http://llvm.org/bugs/show_bug.cgi?id=21297 to cover allowing correct
selection of these instructions.
This fixes http://llvm.org/bugs/show_bug.cgi?id=19396
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220196
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Oliver Stannard [Mon, 20 Oct 2014 11:00:18 +0000 (11:00 +0000)]
[Thumb] Fix crash in Thumb1RegisterInfo::rewriteFrameIndex
This function can, for some offsets from the SP, split one instruction
into two. Since it re-uses the original instruction as the first
instruction of the result, we need ensure its result register is not
marked as dead before we use it in the second instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220194
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Chandler Carruth [Mon, 20 Oct 2014 10:41:29 +0000 (10:41 +0000)]
Switch the default DataLayout to be little endian, and make the variable
be BigEndian so the default can continue to be zero-initialized.
This is one of the prerequisites to making DataLayout a constant and
always available part of every module.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220193
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Chandler Carruth [Mon, 20 Oct 2014 10:35:11 +0000 (10:35 +0000)]
Remove some completely superfluous trailing comments and clang-format
this header to remove numerous formatting inconsistencies that impede
making simple changes here without large diffs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220192
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Chandler Carruth [Mon, 20 Oct 2014 10:27:53 +0000 (10:27 +0000)]
Clean up the comments and doxygen for DataLayout.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220191
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Chandler Carruth [Mon, 20 Oct 2014 10:03:01 +0000 (10:03 +0000)]
Fix a miscompile introduced in r220178.
The original code had an implicit assumption that if the test for
allocas or globals was reached, the two pointers were not equal. With my
changes to make the pointer analysis more powerful here, I also had to
guard against circumstances where the results weren't useful. That in
turn violated the assumption and gave rise to a circumstance in which we
could have a store with both the queried pointer and stored pointer
rooted at *the same* alloca. Clearly, we cannot ignore such a store.
There are other things we might do in this code to better handle the
case of both pointers ending up at the same alloca or global, but it
seems best to at least make the test explicit in what it intends to
check.
I've added tests for both the alloca and global case here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220190
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David Majnemer [Mon, 20 Oct 2014 06:13:33 +0000 (06:13 +0000)]
IR: Replace DataLayout::RoundUpAlignment with RoundUpToAlignment
No functional change intended, just cleaning up some code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220187
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Chandler Carruth [Mon, 20 Oct 2014 05:34:36 +0000 (05:34 +0000)]
Fix a somewhat subtle pair of issues with JumpThreading I introduced in
r220178. First, the creation routine doesn't insert prior to the
terminator of the basic block provided, but really at the end of the
basic block. Instead, get the terminator and insert before that. The
next issue was that we need to ensure multiple PHI node entries for
a single predecessor re-use the same cast instruction rather than
creating new ones.
All of the logic here was without tests previously. I've reduced and
added a test case from the test suite that crashed without both of these
fixes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220186
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Lang Hames [Mon, 20 Oct 2014 04:26:23 +0000 (04:26 +0000)]
[PBQP] Use DenseSet rather than std::set for PBQP's PoolCostAllocator
implementation.
This is good for a ~6% reduction in total compile time on the nightly test suite
when running with -regalloc=pbqp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220183
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Chandler Carruth [Mon, 20 Oct 2014 00:24:14 +0000 (00:24 +0000)]
Teach the load analysis driving core instcombine logic and other bits of
logic to look through pointer casts, making them trivially stronger in
the face of loads and stores with intervening pointer casts.
I've included a few test cases that demonstrate the kind of folding
instcombine can do without pointer casts and then variations which
obfuscate the logic through bitcasts. Without this patch, the variations
all fail to optimize fully.
This is more important now than it has been in the past as I've started
moving the load canonicialization to more closely follow the value type
requirements rather than the pointer type requirements and thus this
needs to be prepared for more pointer casts. When I made the same change
to stores several test cases regressed without logic along these lines
so I wanted to systematically improve matters first.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220178
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Chandler Carruth [Mon, 20 Oct 2014 00:11:31 +0000 (00:11 +0000)]
Add a datalayout string to this test so that it exercises the full gamut
of InstCombine rather than just the bits enabled when datalayout is
optional.
The primary fixes here are because now things are little endian.
In good news, silliness like this seems like it will be going away as
we've got pretty stong consensus on dropping optional datalayout
entirely.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220176
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Rafael Espindola [Sun, 19 Oct 2014 23:24:46 +0000 (23:24 +0000)]
Always use -Wl,-gc-sections on our build.
Both bfd ld and gold correctly handle --export-dynamic, so gc-sections is safe even for binaries
that support plugins.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220174
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Bill Schmidt [Sun, 19 Oct 2014 21:29:21 +0000 (21:29 +0000)]
[PowerPC] Clean up -mattr=+vsx tests to always specify -mcpu
We recently discovered an issue that reinforces what a good idea it is
to always specify -mcpu in our code generation tests, particularly for
-mattr=+vsx. This patch ensures that all tests that specify
-mattr=+vsx also specify -mcpu=pwr7 or -mcpu=pwr8, as appropriate.
Some of the uses of -mattr=+vsx added recently don't make much sense
(when specified for -mtriple=powerpc-apple-darwin8 or -march=ppc32,
for example). For cases like this I've just removed the extra VSX
test commands; there's enough coverage without them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220173
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Bill Schmidt [Sun, 19 Oct 2014 20:48:47 +0000 (20:48 +0000)]
[PowerPC] Temporarily disable VSX for PowerPC fast-isel tests
Patch by Bill Seurer; some comment formatting changes by me.
There are a few PowerPC test cases for FastISel support that currently
fail with VSX support enabled. The temporary workaround under
discussion in http://reviews.llvm.org/D5362 helps, but the tests still
fail because they specify -fast-isel-abort, and the VSX workaround
punts back to SelectionDAG. We have plans to fix FastISel permanently
for VSX, but until that's in place these tests are preventing us from
enabling VSX by default. Therefore we are adding -mattr=-vsx to these
tests until the full support is ready.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220172
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Bill Schmidt [Sun, 19 Oct 2014 20:27:56 +0000 (20:27 +0000)]
[PowerPC] Re-enable VSX test line for fma.ll with -mcpu=pwr7
The VSX testing variant in test/CodeGen/PowerPC/fma.ll had to be
disabled because of unexpected behavior on many of the builders. I
tracked this down to a situation that occurs when the VSX attribute is
enabled for a target that disables the MI early scheduling pass. This
patch adds -mcpu=pwr7 to make this predictable. The other issue will
be addressed separately.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220171
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Lang Hames [Sun, 19 Oct 2014 19:36:33 +0000 (19:36 +0000)]
[ADT] Add a 'find_as' operation to DenseSet.
This operation is analogous to its counterpart in DenseMap: It allows lookup
via cheap-to-construct keys (provided that getHashValue and isEqual are
implemented for the cheap key-type in the DenseMapInfo specialization).
Thanks to Chandler for the review.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220168
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Chandler Carruth [Sun, 19 Oct 2014 10:46:46 +0000 (10:46 +0000)]
Do a better and more complete job of preserving metadata when combining
loads.
This handles many more cases than just the AA metadata, some of them
suggested by Hal in his review of the AA metadata handling patch. I've
tried to test this behavior where tractable to do so.
I'll point out that I have specifically *not* included a test for
debuginfo because it was going to require 2 or 3 times as much work to
craft some input which would survive the "helpful" stripping of debug
info metadata that doesn't match the desired schema. This is another
good example of why the current state of write-ability for our debug
info metadata is unacceptable. I spent over 30 minutes trying to conjure
some test case that would survive, even copying from other debug info
tests, but it always failed to survive with no explanation of why or how
I might fix it. =[
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220165
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Chandler Carruth [Sun, 19 Oct 2014 09:06:56 +0000 (09:06 +0000)]
Move previously dead code to handle computing the known bits of an alias
up to where it actually works as intended. The problem is that
a GlobalAlias isa GlobalValue and so the prior block handled all of the
cases.
This allows us to constant fold based on the actual constant expression
in the global alias. As an example, see the last function in the newly
added test case which explicitly aligns an unaligned pointer using
constant expression math. Without this change, we fail to see that and
fold an alignment test to zero.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220164
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David Majnemer [Sun, 19 Oct 2014 08:32:32 +0000 (08:32 +0000)]
InstCombine: (sub (or A B) (xor A B)) --> (and A B)
The following implements the transformation:
(sub (or A B) (xor A B)) --> (and A B).
Patch by Ankur Garg!
Differential Revision: http://reviews.llvm.org/D5719
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220163
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David Majnemer [Sun, 19 Oct 2014 08:23:08 +0000 (08:23 +0000)]
InstCombine: Optimize icmp eq/ne (shl Const2, A), Const1
The following implements the optimization for sequences of the form:
icmp eq/ne (shl Const2, A), Const1
Such sequences can be transformed to:
icmp eq/ne A, (TrailingZeros(Const1) - TrailingZeros(Const2))
This handles only the equality operators for now. Other operators need
to be handled.
Patch by Ankur Garg!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220162
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Chandler Carruth [Sun, 19 Oct 2014 08:17:50 +0000 (08:17 +0000)]
Fix a long-standing miscompile in the load analysis that was uncovered
by my refactoring of this code.
The method isSafeToLoadUnconditionally assumes that the load will
proceed with the preferred type alignment. Given that, it has to ensure
that the alloca or global is at least that aligned. It has always done
this historically when a datalayout is present, but has never checked it
when the datalayout is absent. When I refactored the code in r220156,
I exposed this path when datalayout was present and that turned the
latent bug into a patent bug.
This fixes the issue by just removing the special case which allows
folding things without datalayout. This isn't worth the complexity of
trying to tease apart when it is or isn't safe without actually knowing
the preferred alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220161
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Chandler Carruth [Sun, 19 Oct 2014 00:42:16 +0000 (00:42 +0000)]
Switch how the datalayout availability test is handled in this code to
make much more sense and in theory be more correct.
If you trace the code alllll the way back to when it was first
introduced, the comments make it slightly more clear what was going on
here. At that time, the only way Base != V was if DL (then TD) was
non-null. As a consequence, if DL *was* null, that meant we were loading
directly from the alloca or global found above the test. After
refactoring, this has become at least terribly subtle and potentially
incorrect. There are many forms of pointer manipulation that can be
traversed without DataLayout, and some of them would in fact change the
size of object being loaded vs. allocated.
Rather than this subtlety, I've hoisted the actual 'return true' bits
into the code which actually found an alloca or global and based them on
the loaded pointer being that alloca or global. This is both more clear
and safer. I've also added comments about exactly why this set of
predicates is used.
I've also corrected a misleading comment about globals -- if overridden
they may not just have a different size, they may be null and completely
unsafe to load from!
Hopefully this confuses the next reader a bit less. I don't have any
test cases or anything, the patch is motivated strictly to improve the
readability of the code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220156
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Bob Wilson [Sun, 19 Oct 2014 00:39:30 +0000 (00:39 +0000)]
Use triple predicate functions instead of checking values directly. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220155
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Chandler Carruth [Sat, 18 Oct 2014 23:47:22 +0000 (23:47 +0000)]
Rename 'TD' to 'DL' in this function as the argument is now a DataLayout
argument.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220151
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Chandler Carruth [Sat, 18 Oct 2014 23:46:17 +0000 (23:46 +0000)]
Fix the other comment to use modern doxygen style and be a bit more
direct. Notably, comment on the fact that the loaded type is significant
in that it determines how wide of an access must be safe.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220150
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Chandler Carruth [Sat, 18 Oct 2014 23:41:25 +0000 (23:41 +0000)]
More formatting cleanup brought to you by clang-format.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220149
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Chandler Carruth [Sat, 18 Oct 2014 23:31:55 +0000 (23:31 +0000)]
Clean up doxygen syntax and reword comments to flow better, have a brief
section, and not have unfinished sentence fragments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220147
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Chandler Carruth [Sat, 18 Oct 2014 23:19:03 +0000 (23:19 +0000)]
Clean up the formatting and trailing whitespace of a routine before
editting it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220146
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Lang Hames [Sat, 18 Oct 2014 22:23:55 +0000 (22:23 +0000)]
[PBQP] Move register-allocation specific PBQP code into RegAllocPBQP.h.
Just clean-up - no functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220145
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Lang Hames [Sat, 18 Oct 2014 17:26:07 +0000 (17:26 +0000)]
[PBQP] Replace the interference-constraints algorithm with a faster version
loosely based on linear scan.
On x86-64 this is good for a ~2% drop in compile time on the nightly test suite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220143
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Chandler Carruth [Sat, 18 Oct 2014 11:00:12 +0000 (11:00 +0000)]
Preserve AA metadata when combining (cast (load (...))) -> (load (cast
(...))).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220141
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Chandler Carruth [Sat, 18 Oct 2014 06:36:22 +0000 (06:36 +0000)]
[InstCombine] Do an about-face on how LLVM canonicalizes (cast (load
...)) and (load (cast ...)): canonicalize toward the former.
Historically, we've tried to load using the type of the *pointer*, and
tried to match that type as closely as possible removing as many pointer
casts as we could and trading them for bitcasts of the loaded value.
This is deeply and fundamentally wrong.
Repeat after me: memory does not have a type! This was a hard lesson for
me to learn working on SROA.
There is only one thing that should actually drive the type used for
a pointer, and that is the type which we need to use to load from that
pointer. Matching up pointer types to the loaded value types is very
useful because it minimizes the physical size of the IR required for
no-op casts. Similarly, the only thing that should drive the type used
for a loaded value is *how that value is used*! Again, this minimizes
casts. And in fact, the *only* thing motivating types in any part of
LLVM's IR are the types used by the operations in the IR. We should
match them as closely as possible.
I've ended up removing some tests here as they were testing bugs or
behavior that is no longer present. Mostly though, this is just cleanup
to let the tests continue to function as intended.
The only fallout I've found so far from this change was SROA and I have
fixed it to not be impeded by the different type of load. If you find
more places where this change causes optimizations not to fire, those
too are likely bugs where we are assuming that the type of pointers is
"significant" for optimization purposes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220138
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Chandler Carruth [Sat, 18 Oct 2014 06:36:18 +0000 (06:36 +0000)]
Remove a test that was ported from the old llvm-gcc frontend test suite.
This test is pretty awesome. It is claiming to test devirtualization.
However, the code in question is not in fact devirtualized by LLVM. If
you take the original C++ test case and run it through Clang at -O3 we
fail to devirtualize it completely. It also isn't a sufficiently focused
test case.
The *reason* we fail to devirtualize it isn't because of any missing
instcombine though. Instead, it is because we fail to emit an available
externally vtable and thus the vtable is just an external and completely
opaque. If I cause the vtable to be emitted, we successfully
devirtualize things.
Anyways, I'm just removing it because it is providing negative value at
this point: it isn't representative of the output of Clang really, LLVM
isn't doing the transform it claims to be testing, LLVM's failure to do
the transform isn't actually an LLVM bug at all and we shouldn't be
testing for it here, and finally the test is written in such a way that
it will trivially pass even when the point of the test is failing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220137
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Nick Kledzik [Sat, 18 Oct 2014 02:28:01 +0000 (02:28 +0000)]
[llvm-objdump] don't test timestamp dump as that is time zone dependent
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220123
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Nick Kledzik [Sat, 18 Oct 2014 01:50:55 +0000 (01:50 +0000)]
[llvm-objdump] enhance test case for mach-o -private-headers
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220120
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Nick Kledzik [Sat, 18 Oct 2014 01:21:02 +0000 (01:21 +0000)]
[llvm-objdump] Fix mach-o binding decompression error
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220119
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Chandler Carruth [Sat, 18 Oct 2014 00:44:02 +0000 (00:44 +0000)]
[SROA] Change how SROA does vector-based promotion of allocas to handle
cases where the alloca type, the load types, and the store types used
all disagree.
Previously, the only way that vector-based promotion occured was if the
alloca type was a vector type. This was one of the *very* few remaining
uses of the alloca's type to guide SROA/mem2reg left in LLVM. It turns
out it was a bad idea.
The alloca type can change very easily based on the mixture of types
loaded and stored to that alloca. We shouldn't be relying on it as
a signal for very much. Instead, the source of truth should be loads and
stores. We should canonicalize the loads and stores as much as possible
and then rely on them exclusively in SROA.
When looking and loads and stores, we may find many different candidate
vector types. This change will let SROA try all of them to find a vector
type which is a viable way to promote the entire alloca to a vector
register.
With this change, it becomes possible to do better canonicalization and
optimization of loads and stores without breaking SROA in random ways,
and that should allow fixing a core source of performance loss in hot
numerical loops such as those in Eigen.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220116
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Aaron Watry [Fri, 17 Oct 2014 23:33:03 +0000 (23:33 +0000)]
R600/SI: Add global atomicrmw xchg
v2: Add separate offset/no-offset tests
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220110
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Aaron Watry [Fri, 17 Oct 2014 23:33:01 +0000 (23:33 +0000)]
R600/SI: Add global atomicrmw xor
v2: Add separate offset/no-offset tests
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220109
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Aaron Watry [Fri, 17 Oct 2014 23:32:59 +0000 (23:32 +0000)]
R600/SI: Add global atomicrmw or
v2: Add separate offset/no-offset tests
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220108
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Aaron Watry [Fri, 17 Oct 2014 23:32:57 +0000 (23:32 +0000)]
R600/SI: Add global atomicrmw min/umin
v2: Add separate offset/no-offset tests
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220107
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Aaron Watry [Fri, 17 Oct 2014 23:32:56 +0000 (23:32 +0000)]
R600/SI: Add global atomicrmw max/umax
v2: Add separate offset/no-offset tests
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220106
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Aaron Watry [Fri, 17 Oct 2014 23:32:54 +0000 (23:32 +0000)]
R600/SI: Add global atomicrmw and
v2: Add separate offset/no-offset tests
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220105
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Aaron Watry [Fri, 17 Oct 2014 23:32:52 +0000 (23:32 +0000)]
R600/SI: Add global atomicrmw sub
v2: Add separate offset/no-offset tests
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220104
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Aaron Watry [Fri, 17 Oct 2014 23:32:50 +0000 (23:32 +0000)]
R600/SI: Fix/add tests for atomicrmw add
The previous tests claimed to test constant offsets in the function name,
but the tests weren't actually testing them.
Clone the tests, and do testing of all combinations of the following:
1) with/without constant pointer offset
2) 32/64-bit addressing modes
3) Usage and non-usage of the return value from the atomicrmw
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220103
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Aaron Watry [Fri, 17 Oct 2014 23:32:49 +0000 (23:32 +0000)]
R600: Rename atomic_load global tests to atomic_add
The function name now matches what it's actually testing.
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220102
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Evgeniy Stepanov [Fri, 17 Oct 2014 23:29:44 +0000 (23:29 +0000)]
[msan] Fix handling of byval arguments with large alignment.
MSan param-tls slots are 8-byte aligned. This change clips
alignment of memcpy into param-tls to 8.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220101
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Pete Cooper [Fri, 17 Oct 2014 22:59:33 +0000 (22:59 +0000)]
Check for dynamic alloca's when selecting lifetime intrinsics.
TL;DR: Indexing maps with [] creates missing entries.
The long version:
When selecting lifetime intrinsics, we index the *static* alloca map with the AllocaInst we find for that lifetime. Trouble is, we don't first check to see if this is a dynamic alloca.
On the attached example, this causes a dynamic alloca to create an entry in the static map, and returns 0 (the default) as the frame index for that lifetime. 0 was used for the frame index of the stack protector, which given that it now has a lifetime, is coloured, and merged with other stack slots.
PEI would later trigger an assert because it expects the stack protector to not be dead.
This fix ensures that we only get frame indices for static allocas, ie, those in the map. Dynamic ones are effectively dropped, which is suboptimal, but at least isn't completely broken.
rdar://problem/
18672951
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220099
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Bill Schmidt [Fri, 17 Oct 2014 21:32:22 +0000 (21:32 +0000)]
[PowerPC] Disable +vsx RUN line for fma.ll due to inconsistency on other builders
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220094
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Rafael Espindola [Fri, 17 Oct 2014 21:25:48 +0000 (21:25 +0000)]
Revert "TRE: make TRE a bit more aggressive"
This reverts commit r219899.
This also updates byval-tail-call.ll to make it clear what was breaking.
Adding r219899 again will cause the load/store to disappear.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220093
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Bill Schmidt [Fri, 17 Oct 2014 21:19:59 +0000 (21:19 +0000)]
[PowerPC] Change assert to better form
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220092
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Matt Arsenault [Fri, 17 Oct 2014 21:13:11 +0000 (21:13 +0000)]
R600/SI: Remove redundant setting of instruction bits
These are all set on the instruction base classes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220091
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Bill Schmidt [Fri, 17 Oct 2014 21:02:44 +0000 (21:02 +0000)]
[PowerPC] Change liveness testing in VSX FMA mutation pass
With VSX enabled, LLVM crashes when compiling
test/CodeGen/PowerPC/fma.ll. I traced this to the liveness test
that's revised in this patch. The interval test is designed to only
work for virtual registers, but in this case the AddendSrcReg is
physical. Since there is already a walk of the MIs between the
AddendMI and the FMA, I added a check for def/kill of the AddendSrcReg
in that loop. At Hal Finkel's request, I converted the liveness test
to an assert restricted to virtual registers.
I've changed the fma.ll test to have VSX and non-VSX variants so we
can test both kinds of multiply-adds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220090
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Peter Collingbourne [Fri, 17 Oct 2014 18:32:36 +0000 (18:32 +0000)]
Disable ccache for go tests.
Should fix llvm-clang-lld-x86_64-debian-fast bot.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220071
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Matt Arsenault [Fri, 17 Oct 2014 18:02:31 +0000 (18:02 +0000)]
Fix typo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220068
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Matt Arsenault [Fri, 17 Oct 2014 18:00:50 +0000 (18:00 +0000)]
R600/SI: Also check for FPImm literal constants
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220067
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Matt Arsenault [Fri, 17 Oct 2014 18:00:48 +0000 (18:00 +0000)]
R600/SI: Allow commuting with source modifiers
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220066
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Matt Arsenault [Fri, 17 Oct 2014 18:00:45 +0000 (18:00 +0000)]
R600/SI: Simplify code with hasModifiersSet
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220065
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Matt Arsenault [Fri, 17 Oct 2014 18:00:43 +0000 (18:00 +0000)]
R600/SI: Fix general commuting breaking src mods
The generic code trying to use findCommutedOpIndices won't
understand that it needs to swap the modifier operands also,
so it should fail if they are set.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220064
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Matt Arsenault [Fri, 17 Oct 2014 18:00:41 +0000 (18:00 +0000)]
R600/SI: Cleanup code with ChangeToFPImmediate
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220063
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Matt Arsenault [Fri, 17 Oct 2014 18:00:39 +0000 (18:00 +0000)]
R600/SI: Allow comuting fp immediates
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220062
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Matt Arsenault [Fri, 17 Oct 2014 18:00:37 +0000 (18:00 +0000)]
R600/SI: Use early return instead of checking condition twice
Any commutable instruction will have at least src1.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220061
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Peter Collingbourne [Fri, 17 Oct 2014 17:46:46 +0000 (17:46 +0000)]
We also need to catch OSError here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220058
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Matt Arsenault [Fri, 17 Oct 2014 17:43:00 +0000 (17:43 +0000)]
R600/SI: Use complex pattern for MUBUF load patterns.
This eliminates a use of the SI_ADDR64_RSRC pseudo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220057
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Matt Arsenault [Fri, 17 Oct 2014 17:42:56 +0000 (17:42 +0000)]
R600/SI: Remove SI_BUFFER_RSRC pseudo
Just use REG_SEQUENCE directly, so there are fewer
instructions to need to deal with later.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220056
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Juergen Ributzka [Fri, 17 Oct 2014 17:39:00 +0000 (17:39 +0000)]
[Stackmaps] Enable invoking the patchpoint intrinsic.
Patch by Kevin Modzelewski
Reviewers: atrick, ributzka
Reviewed By: ributzka
Subscribers: llvm-commits, reames
Differential Revision: http://reviews.llvm.org/D5634
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220055
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